The host wants to map with the hostname using Domain name system (DNS). The resolver sends the query to the local DNS server. If local DNS fails to answer then the local DNS server sends the query to...

If you posted irrelevant answer. I will downvote and report you to Bartleby.

Extracted text: The host wants to map with the hostname using Domain name system (DNS). The resolver sends the query to the local DNS server. If local DNS fails to answer then the local DNS server sends the query to the root server. If Root server fails then the query is forwarded to the authoritative server which is the last level server. The reply of the DNS query is recursive which will pass through all the servers again and reaches to host with negligible propagation, processing and other delays. The average access time for fetching a query is 3ns. All the server takes 2ns of access time. If 60% of the time we find the results in the local DNS server. The last level server always has the answer. What percentage of time we will find the results in the root server?